Questions & Answers for: Honeywell internal fault

...internal fault and to prevent any further damage switches itself off; the faults could be: open heating element (assuming it is electrical); blower not turning; open limit switch. The limit switch is ...

my furnace flame dont stop by temperature Chances are it's a bad thermostat, an internal switch may have faulted, not ending the heat call after the thermostat is truly satisfied.

internal fault, just the word "INTERNAL") Switching power off is not resetting it, probably sue to the internal battery as "Dr Sorted" describes above. Mine has been installed lass